This dataset contains an updated atlas of spectra from the
Short-Wavelength Spectrometer (SWS) on the Infrared Space Observatory (ISO),
which took spectra from 2.4 to 45 μm. The updated atlas (Mizuno et al. 2025)
contains 1035 spectra that were reprocessed starting from the "pws" files 
from the original atlas of Sloan et al. (2003). 

Two versions of each spectrum are provided in IPAC-table format. The 
"newsws" version contains the final reprocessed spectrum; the "newpws" 
files contain both an intermediate version of the reprocessed data, with 
the band segment overlaps included, and the original "pws" data. 
Metadata are provided in the file header. The files contain either
five (newsws) or seven (newpws) data columns:

| wavelength|    flux|   error| segment| overlap_flag|
|      float|   float|   float|     int|          int|
|    microns|      Jy|      Jy|        |             |
|        NaN|     Nan|     NaN|    null|         null|

 
| wavelength|    flux|   error| segment| flux_pws| error_pws| overlap_flag|
|      float|   float|   float|     int|    float|     float|          int|
|    microns|      Jy|      Jy|        |       Jy|        Jy|             |
|        NaN|     NaN|     NaN|    null|      NaN|       NaN|         null|

See Mizuno et al. 2025, ApJS, in press, for processing details. 

The spectra will also be available at IPAC in the (searchable) Infrared
Science Archive (IRSA).

Files in this dataset:

README_SWS2025.txt 
   (this file)
ISO_SWS_UpdatedAtlas_Mizuno+2025.tar.gz
   (the full dataset with 2070 files for 1035 spectra)
SAMPLE_SPECTRUM_38201557_newpws.tbl
   (sample "newpws" spectrum to show the format and header with the metadata)
SAMPLE_SPECTRUM_38201557_newsws.tbl
   (sample "newsws" spectrum to show the format and header with the metadata)
New_SWS_Atlas.tbl
   (list of the 1035 spectra giving RA, Dec, common name, TDT in IPAC table format)
